Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2025-07-05 04:28:47 +02:00
Code Issues Packages Projects Releases Wiki Activity

Examples: Using draw_data->DisplaySize, followup to c50198debe. Fix Vulkan secondary viewport rendering. SDL+Vulkan: Matched changes. Fix vcprojs. (#1542, #1042)

Browse Source
This commit is contained in:
omar
2018-03-13 21:45:09 +01:00
parent 921bb92eec
commit 98b66a5fc9
7 changed files with 39 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
examples/sdl_vulkan_example/main.cpp
View File

@ -9,7 +9,6 @@
#include <SDL_vulkan.h>
#include <vulkan/vulkan.h>
// FIXME-VULKAN: Resizing with IMGUI_UNLIMITED_FRAME_RATE triggers errors from the validation layer.
#define IMGUI_UNLIMITED_FRAME_RATE
#ifdef _DEBUG
#define IMGUI_VULKAN_DEBUG_REPORT
@ -220,19 +219,20 @@ static void CleanupVulkan()
vkDestroyInstance(g_Instance, g_Allocator);
}
static void FrameBegin(ImGui_ImplVulkan_WindowData* wd)
static void FrameRender(ImGui_ImplVulkan_WindowData* wd)
{
VkResult err;
VkSemaphore& image_acquired_semaphore = wd->Frames[wd->FrameIndex].ImageAcquiredSemaphore;
err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
check_vk_result(err);
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkResult err;
for (;;)
{
err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, 100);
if (err == VK_SUCCESS) break;
if (err == VK_TIMEOUT) continue;
err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX); // wait indefinitely instead of periodically checking
check_vk_result(err);
}
{
err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, fd->PresentCompleteSemaphore, VK_NULL_HANDLE, &fd->BackbufferIndex);
err = vkResetFences(g_Device, 1, &fd->Fence);
check_vk_result(err);
}
{
@ -248,26 +248,25 @@ static void FrameBegin(ImGui_ImplVulkan_WindowData* wd)
VkRenderPassBeginInfo info = {};
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
info.renderPass = wd->RenderPass;
info.framebuffer = wd->Framebuffer[fd->BackbufferIndex];
info.framebuffer = wd->Framebuffer[wd->FrameIndex];
info.renderArea.extent.width = wd->Width;
info.renderArea.extent.height = wd->Height;
info.clearValueCount = 1;
info.pClearValues = &wd->ClearValue;
vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
}
}
static void FrameEnd(ImGui_ImplVulkan_WindowData* wd)
{
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkResult err;
// Record Imgui Draw Data and draw funcs into command buffer
ImGui_ImplVulkan_RenderDrawData(fd->CommandBuffer, ImGui::GetDrawData());
// Submit command buffer
vkCmdEndRenderPass(fd->CommandBuffer);
{
VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
VkSubmitInfo info = {};
info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
info.waitSemaphoreCount = 1;
info.pWaitSemaphores = &fd->PresentCompleteSemaphore;
info.pWaitSemaphores = &image_acquired_semaphore;
info.pWaitDstStageMask = &wait_stage;
info.commandBufferCount = 1;
info.pCommandBuffers = &fd->CommandBuffer;
@ -276,8 +275,6 @@ static void FrameEnd(ImGui_ImplVulkan_WindowData* wd)
err = vkEndCommandBuffer(fd->CommandBuffer);
check_vk_result(err);
err = vkResetFences(g_Device, 1, &fd->Fence);
check_vk_result(err);
err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
check_vk_result(err);
}
@ -285,23 +282,15 @@ static void FrameEnd(ImGui_ImplVulkan_WindowData* wd)
static void FramePresent(ImGui_ImplVulkan_WindowData* wd)
{
VkResult err;
// If IMGUI_UNLIMITED_FRAME_RATE is defined we present the latest but one frame. Otherwise we present the latest rendered frame
#ifdef IMGUI_UNLIMITED_FRAME_RATE
uint32_t PresentIndex = (wd->FrameIndex + IMGUI_VK_QUEUED_FRAMES - 1) % IMGUI_VK_QUEUED_FRAMES;
#else
uint32_t PresentIndex = wd->FrameIndex;
#endif // IMGUI_UNLIMITED_FRAME_RATE
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[PresentIndex];
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkPresentInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
info.waitSemaphoreCount = 1;
info.pWaitSemaphores = &fd->RenderCompleteSemaphore;
info.swapchainCount = 1;
info.pSwapchains = &wd->Swapchain;
info.pImageIndices = &fd->BackbufferIndex;
err = vkQueuePresentKHR(g_Queue, &info);
info.pImageIndices = &wd->FrameIndex;
VkResult err = vkQueuePresentKHR(g_Queue, &info);
check_vk_result(err);
}
@ -329,6 +318,7 @@ int main(int, char**)
// Create Window Surface
VkSurfaceKHR surface;
VkResult err;
if (SDL_Vulkan_CreateSurface(window, g_Instance, &surface) == 0)
{
printf("Failed to create Vulkan surface.\n");
@ -348,6 +338,9 @@ int main(int, char**)
io.ConfigFlags |= ImGuiConfigFlags_PlatformNoTaskBar;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
// Setup SDL binding
ImGui_ImplSDL2_Init(window, NULL);
// Setup Vulkan binding
ImGui_ImplVulkan_InitInfo init_info = {};
init_info.Instance = g_Instance;
@ -359,7 +352,6 @@ int main(int, char**)
init_info.DescriptorPool = g_DescriptorPool;
init_info.Allocator = g_Allocator;
init_info.CheckVkResultFn = check_vk_result;
ImGui_ImplSDL2_Init(window, NULL);
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
// Setup style
@ -387,7 +379,6 @@ int main(int, char**)
VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
VkResult err;
err = vkResetCommandPool(g_Device, command_pool, 0);
check_vk_result(err);
VkCommandBufferBeginInfo begin_info = {};
@ -416,8 +407,6 @@ int main(int, char**)
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
bool swap_chain_has_at_least_one_image = false;
// Main loop
bool done = false;
while (!done)
@ -478,26 +467,13 @@ int main(int, char**)
// Rendering
ImGui::Render();
memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
FrameBegin(wd);
ImGui_ImplVulkan_RenderDrawData(wd->Frames[wd->FrameIndex].CommandBuffer, ImGui::GetDrawData());
FrameEnd(wd);
FrameRender(wd);
ImGui::RenderAdditionalViewports();
#ifdef IMGUI_UNLIMITED_FRAME_RATE
// When IMGUI_UNLIMITED_FRAME_RATE is defined we render into latest image acquired from the swapchain but we display the image which was rendered before.
// Hence we must render once and increase the FrameIndex without presenting.
if (swap_chain_has_at_least_one_image)
FramePresent(wd);
#else
FramePresent(wd);
#endif
swap_chain_has_at_least_one_image = true;
wd->FrameIndex = (wd->FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
}
// Cleanup
VkResult err = vkDeviceWaitIdle(g_Device);
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
ImGui_ImplVulkan_Shutdown();
ImGui_ImplSDL2_Shutdown();

2
examples/sdl_vulkan_example/sdl_vulkan_example.vcxproj
View File

@ -20,7 +20,7 @@
</ItemGroup>
<PropertyGroup Label="Globals">
<ProjectGuid>{BAE3D0B5-9695-4EB1-AD0F-75890EB4A3B3}</ProjectGuid>
<RootNamespace>opengl3_example</RootNamespace>
<RootNamespace>sdl_vulkan_example</RootNamespace>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">